Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1286
Fig. 574 … Fig. 575 Fig. 574 starting panel fob d. c. blower setFig. 575 MAIN SWITCH PANEL FOR A. C. BLOWER SET The operation of several sub-stations on a single line isgenerally recognized as good practice. To insure continuity of service in the event of linetrouble, it is expedient to sectionalize the line…
